From random to regular: neural constraints on the emergence of isochronous rhythm during cultural transmission

Social Cognitive and Affective Neuroscience
Massimo LumacaGiosuè Baggio

Abstract

A core design feature of human communication systems and expressive behaviours is their temporal organization. The cultural evolutionary origins of this feature remain unclear. Here, we test the hypothesis that regularities in the temporal organization of signalling sequences arise in the course of cultural transmission as adaptations to aspects of cortical function. We conducted two experiments on the transmission of rhythms associated with affective meanings, focusing on one of the most widespread forms of regularity in language and music: isochronicity. In the first experiment, we investigated how isochronous rhythmic regularities emerge and change in multigenerational signalling games, where the receiver (learner) in a game becomes the sender (transmitter) in the next game. We show that signalling sequences tend to become rhythmically more isochronous as they are transmitted across generations. In the second experiment, we combined electroencephalography (EEG) and two-player signalling games over 2 successive days. We show that rhythmic regularization of sequences can be predicted based on the latencies of the mismatch negativity response in a temporal oddball paradigm. These results suggest that forms of isochronicity in c...Continue Reading

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Citations

Dec 28, 2018·The European Journal of Neuroscience·Massimo LumacaPeter Vuust
Jun 11, 2020·Cerebral Cortex·Shiri Makov, Elana Zion Golumbic
Sep 4, 2020·Autism Research : Official Journal of the International Society for Autism Research·Emily J KnightJohn J Foxe
Oct 1, 2021·The Behavioral and Brain Sciences·Massimo LumacaGiosuè Baggio

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